These conditions will affect the viscosity of HPMC, please pay attention!!

What factors will affect the viscosity of HPMC? The main reasons are as follows:

1. The higher the degree of polymerization of cellulose ether of HPMC, the higher its molecular weight, resulting in the higher viscosity of its aqueous solution.

2. If the content or concentration of cellulose ether is high, the viscosity of its aqueous solution will also be high. However, in use, attention should be paid to the selection of appropriate dosage, mainly to avoid excessive dosage affecting the working performance of mortar and concrete.

3. Like most liquids, the viscosity of cellulose ether solution will decrease with the increase of temperature. The higher the concentration of cellulose ether, the greater the impact of temperature.

4. Cellulose ether solution is usually pseudoplastic and has the characteristics of shear thinning. The higher the shear rate, the lower the viscosity.

To sum up, the adhesion of mortar will be reduced due to external forces, which is also conducive to the scraping operation of mortar, so that the mortar has good adhesion and workability at the same time. However, if the concentration of cellulose ether solution is low and the viscosity is small, it will show the characteristics of Newtonian fluid. When the concentration increases, the solution will slowly show the characteristics of pseudoplastic fluid. The higher the concentration, the more obvious its pseudoplasticity.